87 GN Problems

[ToofastformyDad]

Hi I have an 1987 Buick Grand National that i bought from my dad. Iv had a problem with a o2 slow to respond code so i changed it and it ran ok, i am running 90 octane with a street chip. well after awhile the code pops up again and its a new o2. just recently it started to throw another code and it idles ruffly till it warmes up.the car will die if i do not give it a lil gas, it is throwing code 44 wich is TPS sensor high we checked my tps on the scanmaster and its running .44 wich is just fine well sometimes the car wont start for a long time and a lil ether wich is bad but ya when it starts it runs and fuel pressure is just fine i need some help plz thnx